INT32S DRV_TimerCountSetting ( LONG DeviceHandle， PT_TimerCountSetting *lpTimerCountSetting );
On the device indicated by the DeviceHandle, it specifies a counter to work as a timer by setting a value for down count and starts the operation..
When the timer's count reaches the preset value, an interrupt will occur, please call DRV_EnableEvent function first to enable the interrupt event, DRV_CheckEvent can be used to check the status of the counter.
Some parameters, such as target counter channel (counter) and specified count (Count), are stored in the PT_TimerCountSetting structure pointed by the lpTimerCountSetting.
| Name | Direction | Range | Description |
| DeviceHandle | input | default | The pointer retrieved from DRV_DeviceOpen which specifies the target device. |
| lpTimerCountSetting | input / output | default | The pointer to indicate the user-prepared structure PT_TimerCountSetting that stores target counter channel (INT16U counter) and specified count (INT32U Count). |
| 1. SUCCESS | Successful. |
| 2. InvalidDeviceHandle | The Devicehandle is NULL. |
| 3. InvalidChannel | The target channel is out of range. |